Finding the Fourth Proportional to 212,319.23, 292,967.08 and 121,657.75
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Solution
The fourth proportional to 212,319.23, 292,967.08 and 121,657.75 is: 167,868.52
Step by Step Solution
- Step 1: Write the proportion equation
212,319.23 : 292,967.08 = 121,657.75 : x - Step 2: Convert to fraction form
212,319.23/292,967.08 = 121,657.75/x - Step 3: Cross multiply
212,319.23x = 292,967.08 × 121,657.75 - Step 4: Simplify right side
212,319.23x = 35,641,714,740.31 - Step 5: Solve for x
x = 35,641,714,740.31/212,319.23 - Step 6: Final answer
x = 167,868.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.